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1.51ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • IGI LG512205224

Shape and cutting style on the report: Round brilliant

Certificate IGI LG512205224

Diamond specifications and retailer prices

From $1,224 AUD
$860 USD
As of October 30, 2026
Save $5,854 AUD (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $7,078 AUD at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512205224 or 512205224. Listed at 9 retailers as of October 29, 2026, with prices from $1,224 to $7,078, a $5,854 spread on the same certified stone. MOH London lists it at $7,078. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512205224
Dimensions7.44 × 7.47 × 4.42 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.44 mm7.47 mm1.51 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512205224
Side View
Table 59.0%Crown 32.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 59.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $7,078 AUD|Low: $1,224 AUD|High: $7,125 AUD|Avg: $3,392 AUD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2$1,224 AUD
Retailer 3$1,889 AUD
Retailer 6$2,056 AUD
Retailer 4$2,191 AUD
Retailer 9$3,012 AUD
Retailer 5$3,466 AUD
Retailer 8$4,084 AUD
Retailer 7$4,107 AUD
Retailer 10$4,905 AUD
MOH London$7,078 AUD

13 data points across 10 retailers

9 retailers$1,224 AUD to $7,078 AUD

A
Cheapest Retailer
-
$1,224 AUD
$860 USD
B+
Retailer 2
-
$1,889 AUD
$1,327 USD
View
B+
Retailer 3
-
$2,056 AUD
$1,444 USD
View
B+
Retailer 4
-
$2,191 AUD
$1,539 USD
View
Retailer 5
-
$2,191 AUD
$1,539 USD
View
Price last confirmed 18 days ago
B
Retailer 6
-
$3,466 AUD
$2,435 USD
View
B
Retailer 7
-
$4,084 AUD
$2,869 USD
View
B
Retailer 8
-
$4,107 AUD
$2,885 USD
View
Most Expensive
B
MOH London
LG512205224 · Oct 29
$7,078 AUD
£3,915 GBP
View
8 more retailers have this diamond
Prices start from $1,224 AUDSave up to $5,854 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Round
$1,224 AUD